Reliable and really tough, the Aqua One heater range is easy to adjust and suitable for every aquarium, whether tropical or marine. Now featuring an extended 3 year warranty for your peace of mind. The Aqua One heater is not only tough but very easy to adjust with a clear visual indication of setting, visible on the heater tube itself. Just twist the adjustment knob, fit and forget.

Buy a Spare Heater

We can't stress enough the importance of keeping a spare aquarium heater as part of your essential set up. Don't be caught out when your aquarium heater fails, have a spare aquarium heater on hand to exchange immediately and so maintain water temperature and ensure your livestock are undisturbed.

Replacing your aquarium heater

The cold will get to your fish far quicker than poor water quality or even disease. So its imperative that, if your aquarium is cold, the heater is replaced as soon as possible. Aqua One heaters are pre set to 24-25 degrees Celsius which suits most tropical and marine fish.

Put the heater in your aquarium, attaching it to the glass with the supplied suckers, allow five minutes or so for the heater to acclimatise to the current aquarium temperature and plug in. The heater will raise the temperature steadily (if required) over a period of hours. Don't worry if the heater goes on and off a few times during this time - it is constantly adjusting to the surrounding water temperature.

As the temperature rises your fish will become more active. Keep a close eye on them over the next few days so that stress related illness such as white spot, can be remedied if required.

My original aqua one 200w heater was starting to act up, no hardship really as it is 10 years old!!! As it has served me (and my fish) very well I thought I'd price a new one through your website. I was exceptionally surprised to find it cheaper (even with postage cost) than all other major branded similar products. Therefore I had no hesitation in buying another one, here's looking forward to the next 10 years!!!!

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The heat is on!

Thursday, 1 December 2016 | Roy

Needed a replacement heater for my large tank & this was the perfect

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Heater

Friday, 24 October 2014 | Alan

Bought this for my 850 tank. Well pleased with the product and the most helpful staff's advice.

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heater

Sunday, 4 May 2014 | Sharon

Excellent cheaper than anywhere else

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Item just as expected

Monday, 25 November 2013 | Christopher

Bought this as a different Heater proved poor. This one has performed just as expected, Gives temperature as set. Service from Aquarium Parts was very quick so I will use them again with no hesitation and will recommend them to other people. thank you very much.

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Heater

Tuesday, 22 October 2013 | Tony

Not used as such keeping it as a spare but it is the same one as currently in my tank

Genuine Aqua One aquarium heater clips for all Aqua One aquarium heaters from 25w to 300w. These replacement clips are original Aqua One items, identical to the ones supplied with your heater / aquarium. Renew and replace as they become lost or loose in your aquarium. Don't forget to unplug your heater during any maintenance.

This product is a real innovation. Not only does it condition fresh tap water for aquarium use but it also adds other substances to the water to re enforce your fish's immune systems and really boost their health. Every time you use this additive you are doing your fish good!

The Aquis Advance 1050 Canister Filter is a great replacement for an internal filter on setups of up to 250 litres. It offers far superior filtration with both mechanical and biological elements included and a 4 year warranty.